Kubota WG1605-E3 - DTC 628-Fuel Pump Relay Ground Short; Fuel Pump Relay Control;Coil (DTC 627 to 629)

ECM SYSTEM
WG1605-G-E3,WG1605-L-E3,WG1605-GL-E3, DM
1-199
(17) Fuel Pump Relay Control/Coil (DTC 627 to 629)
DTC 627-Fuel Pump Relay Coil Open
• Hardware: Fuel Pump Relay Pull in Coil
• Enabling Conditions: Key On
• Set Conditions: Fuel Pump relay coil output open circuit for more than 10 samples of the circuit
• Corrective Action(s): Illuminate MIL
• Non-emissions related fault
• Possible Causes: Open coil in relay, Open in relay driver circuit in engine harness or faulty ECM
DTC 628-Fuel Pump Relay Ground Short
• J1939 SPN: 1348 FMI: 4
• Hardware: Fuel Pump Relay Pull in Coil
• Enabling Conditions: Engine Running
• Set Conditions: Fuel Pump relay coil output shorted to ground for more than 10 samples of the circuit
• Corrective Action(s): Illuminate MIL
• Non-emissions related fault
• Possible Causes: Relay pull in coil shorted internally, relay driver circuit shorted to ground in wire harness, faulty
ECM
• J1939 SPN: 1347 FMI: 5
• Hardware: Fuel Pump Motor
• Enabling Conditions: Engine Running
• Set Conditions: Fuel pump motor high-side on-state < 4.0 volts, battery voltage > 8.0 volts
• Corrective Action(s): Illuminate MIL
• Non-emissions related
• Possible Causes:
KiSC issued 12, 2016 A